Abstract
Recent advances in smart surface engineering, coating technologies and cold spray technologies offer unique possibilities for better controlling friction and wear under lubricated rolling, sliding or rotating contact conditions. Smart surface technologies such as laser texturing and/or dimpling, laser glazing, reactive ion etching and shot-peening have also become very popular. Recently, a novel method for depositing ceramic thick films by aerosol deposition (AD) has been developed. Submicron ceramics powders are accelerated by fast gas flow and then impacted on a substrate, to form a dense, uniform and hard ceramic layer at room temperature. In this study, in order to create the textured surface without the thermal effect, AD method was employed. The conditions to deposit alumina films and the adhesive strength of the films were investigated. The thickness of deposited alumina film increased exponentially, as the reciprocating cycles increased in numbers. The deposited films were scratched using a diamond indenter. The reciprocating cycles in depositing exceed 20, the adhesive strength of the films increased from 75N to 90N.
